Seiko Cal. 6378 - 990

Seiko 6378-990

This Hand-Winding model from 1974 features a 37mm Hardlex-Coated Steel case. With its 21mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-521bcb13087b]

Also known as: Navigator

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
15.7mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
70m
Dial Color
Black
Jewels
34j
Frequency
28,800 bph
Power Reserve
49 hours
Year
1974

Related Models

seikata-wm-521bcb13087b